The only Berry's I've shot are their 9mm 115 grain RNHB Heavy Plate bullets and I liked them a lot. With their heavy plating I had zero problems with them at any loading power in my 9's. And generally I've had no problems with the Extreme bullets either except for their 38 caliber 125 grain bullets (not heavy plated). I've had plating stripping with them when loaded too hot, but that was my fault and not the bullet's fault for loading them hotter than they were designed to handle. The plating would strip and deposit at the junction of the barrel and the frame on my N frame 357 pistols and jam up the cylinder. I didn't have much leading of the barrel though.